The working principle of high-efficiency multi-functional electric soldering iron
The working principle of high-efficiency multi-functional electric soldering iron
The control circuit of the soldering iron is an integrated circuit block specially developed for this soldering iron, which contains circuits such as power control and signal detection. The figure also gives the name of each terminal pin of the integrated block. One end of the AC 220V power supply is input to the power control circuit inside the integrated circuit through the ④ pin of the IC, and then sent to the electric soldering iron through the ⑤ pin and the external potentiometer W, and the output power can be changed by changing the resistance of W.
Pin ⑦ of the IC is the input terminal of the detection signal. When the switch K of the DC power supply 3V is connected, the detection signal input by the 7 pin is amplified by the internal circuit, and then output by the ② and ⑧ pins. According to whether the output signal can drive the LED By emitting light, you can judge whether the capacitors, resistors, diodes, triodes in the circuit are good or bad, and whether the circuit is on or off.
Advantages of high-efficiency multifunctional electric soldering iron
1. With adjustable power, one can replace three commercially available 20W, 30W, 50W soldering irons.
2. The power can be changed at any time according to the size of the weldment and the different ambient temperature, so as to prevent the overheating of the soldering iron tip and reduce the formation of oxide layer, thereby increasing the tin-eating ability of the soldering iron tip, improving the quality of the weldment and welding speed, and at the same time Played the role of power saving and life extension.
3. The actual welding operation often involves pre-detection of the on-off of the wire, the quality of the components, the presence or absence of alternating current, and so on. Also do not have a kind of electric soldering iron with detection function at present for this reason, this soldering iron has multiple test functions, is the electrical tool of detection and welding integration.
